He was lord of Montmorency, Écouen Marly, Feuyard, Saint-Brice, Épinay-sur-Seine, Conflans-Sainte-Honorine and many other lordships.
Bouchard was the son of the Constable of France, Mathieu I of Montmorency and Alice FitzRoy,[1] illegitimate daughter of King Henry I of England.
[2] He appeared at the French court in the early 1150s and soon became one of the confidants of King Louis VII, for whom he carried out various important assignments.
Being the grandson of the King of England, having married a woman whose lineage went back to Charlemagne, and having become through this marriage, a relative of Philip Augustus, Bouchard was considered one of the most powerful barons of the Kingdom of France and began to style himself "by the grace of God, lord Montmorency".
In 1189, he took the cross, but died before the royal army set out on the Third Crusade.